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Finding the Fourth Proportional to 51,009.59, 70,393.17 and 28,347.86

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Solution

The fourth proportional to 51,009.59, 70,393.17 and 28,347.86 is: 39,120.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,009.59 : 70,393.17 = 28,347.86 : x
  2. Step 2: Convert to fraction form
    51,009.59/70,393.17 = 28,347.86/x
  3. Step 3: Cross multiply
    51,009.59x = 70,393.17 × 28,347.86
  4. Step 4: Simplify right side
    51,009.59x = 1,995,495,586.38
  5. Step 5: Solve for x
    x = 1,995,495,586.38/51,009.59
  6. Step 6: Final answer
    x = 39,120.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.